glm-5.3-flash
0b43ea1449
- src/mem.rs: MemBackend implements Backend (seven methods + put_staged, name "mem") over Arc<parking_lot::Mutex<BTreeMap<..>>>; CAS first-writer-wins puts, materializing MemCursor body, degenerate in-memory MemStaging whose commit publishes via the same CAS clause and self-discards on failure; discard leaves zero residue. - CAS re-put is dedup for both put forms; reads are no-ops on the virgin store; delete carries Missing; size is metadata-only. - Eight in-module tests mirror the wave-1 double's assertions: method contract, list well-formedness, cursor body read contract + ADR-006 range digest, empty-entry round-trip, staged happy path, and both hygiene forms (fail_commit test hook stands in for media failure). - backend.rs: clamped promoted pub(crate) — the shared EOF-clamping arithmetic both mem cursor bodies compose (no per-engine duplicate). Verification: cargo test --features mem (33+7 green); cargo test (default) green; clippy --all-features --all-targets -D warnings green; fmt --check green.